Kelvin-Tkachenko waves of few-vortex arrays in trapped Bose-Einstein condensates

Tapio Simula, K Machida

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    17 Citations (Scopus)

    Abstract

    We have calculated the low-lying elementary excitations of three-dimensional few-vortex arrays in trapped Bose-Einstein condensates. The number of different Kelvin-Tkachenko vortex wave branches found matches the number of vortices in the condensate. The lowest odd-parity modes exhibit superfluid gyroscopic vortex motion. Experimentally, these modes could be excited and observed individually or in connection with the formation and decay of quantum turbulence.
    Original languageEnglish
    Pages (from-to)1 - 5
    Number of pages5
    JournalPhysical Review A
    Volume82
    Issue number6
    DOIs
    Publication statusPublished - 2010

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